Lock-jointed foldable draft-beam for sectional harrows.



E. a. GLAUSEN. LOOK JOINTED FOLDABLE DRAFT BEAM FOR SEGTIONAL HARROWS.

APPLICATION FILED MAR.15, 1909.

Patented July 13, 1909.

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UNITED STATES PATENT @FFICE.

EDGAR C. CLAUSEN, OI" BLAIR, NEBRASKA.

LOCK-JOINTED FOLDABLE DRAFTBEAM FOR SECTIONAL HARROWS.

To all whom it may concern:

Be it known that I, EDGAR C. CLAUSEN, a citizen of the United States,residing at Blair, in the county of v1. ashington and State of Nebraska,have invented certain new and useful Improvements in Lock-Jointed Foldable Draft-Beams for Sectional Harrows, of which the following is aspecification.

My invention relates to improvements in draft-beams for harrows of twoor more laterally arranged harrow sections, usually hinged together,between which harrow and the evener to which the team is hitched, thesaid draft-beam is interposed to distribute the draft equally to all thesections of the harrow; and the objects of my improvement are, first, toprovide a jointed draftbeam that will be unbendable in any directionwhile the harrow is being drawn forward in service or in turning aroundon the field; and second, that can be readily folded endwise, whenlaterally folding the harrow sections to which it is attached, withoutin any manner breaking the connections of said draft-beam with saidharrow sections or With the team. These and minor objects hereinaftermore fully set forth I attain by the mechanism illustrated in theaccompanying drawing, in which Figure 1 is a top view of an entire threepart or double jointed draft-beam as it appears connected up in service;Fig. 2, a front View of the same, the draft-chains removed, one endfolded up and the joint of the opposite end unlocked ready to fold; Fig.3, a partial end view of Fig. 1 Fig. 4, a sectional view looking towardthe center from the broken line b in Fig. 1 Fig. 5, a vertical sectionon the broken line a of Fig. 1 and Fig. 6, a top view of the unlockedjoint 31 in Fig. 2.

I prefer to construct the body of my draft-beam of round tubing,although other shapes of tubing or solid metal bars may be used. Thebeam shown in the drawings consists of the central part 2 and the endparts 3 and 4 hinge-jointed together at 31 and 32, as shown in Figs. 2and 6. The joint ends of the end parts are furcated and thecorresponding ends of the central part shaped to form central tongues 38disposed between the branches 39 and 40 of the forks. These are crossperforated and receive the pivotal rivets 31 and 32 to complete therequired articulation. The shoulders at the bases of the tongues areformed oblique to allow the Specification of Letters Patent.

Application filed March 15, 1909.

Patented July 13, 1909.

Serial No. 483,663.

end parts to swing over toward each other as shown by one end andindicated by broken lines at the opposite end, f in Fig. 2. The joint isotherwise formed and restricted in size so as not to exceed at any pointthe outer diameter of the tubes ointed together. Toward the ends of thecentral portion 2 the broad stop-collars 5 and 6 are stationarilyfastened by the eye-bolts 17 and 18, and 33 and 34, disposed crosswisethrough both collar and tube as shown in F ig. 5.

The locking sleeves 7 and S are fitted closely but loosely to receivethe jointed beam therethrough and slide freely on said beam. To theouter ends of said locking sleeves the yokes 25 and 26 are fastened bythe bent branches 23 and 24 riveted to the walls of the sleeves. Theseyokes also have forwardly inclined extensions 21 and 22 perforated toform eyes in which to connect the rear ends of the outer draft chains 27and 28. The forward ends of these chains with those of the middle draftchains 29 and 30,which latter have their rear ends connected in theeye-bolts 33 and 34,are centrally connected in the ring 37 to receivethe clevis j on the draft evcner i. The draft on the outer chains slidesand retains the sleeves against the stop-collars, where said sleevesinclose and lock the hinge-joints rendering the whole beam rigid andunfoldable.

The forward tooth-beams of the three harrow sections are indicated bythe broken lines at e, (Z and e, in Fig. 1 here also are indicated theusual hooks 7r, h, etc. to engage the attaching links on saiddraft-beamz-shown in larger detail in Figs. 3 and 4.

Tht attaching links 15 and 16 at the ends of the beam are fastenedthereto by the eyebolts 13 and 14 which may be shifted to the differentholes 35 and 36 to accommodate different widths of harrows or harrowsections 0 and e. The links 19 and 20 are carried by the eye-bolts 17and 18 which are shiftable to the perforations 41 and 42 andinterchangeable with the eye-bolts 33 and 34 to adjust the links tovariable widths of the central harrow section (Z. The links 11 and 1. 2are carried by the rings 9 and 10 respectively, which rings looselyencircle the sliding sleeves 7 and 8, as shown in Fig. 4, allowing thelinks 11 and 1.2 to automatically adjust to the positions of theirrespective hooks and allowing the sleeves to slide loosely through saidrings to unlock and lock the hinge-joints in the beam.

hen the draft is slackened on the ring 37 giving slack to the chains 27and 28, the vice connected to retain said sleeve in looking sleeves 7and 8 may be slid outwardly to the positions indicated by the brokenlines 76 and Z in Fig. 1 this unlocks the oints as shown at 31 in Fig. 2and allows the end portions of the beam to be folded upward as shown at8 on the opposite end. The harrow sections may be left attached and foldup in like manner with the beam to pass through narrow spaces orgateways; it being obvious that such tolding of the beam slackens theouter long draft chains so that draft would only be by the short chainsof the central section on which I connected to the harrow.

all other parts are imposed. when so folded.

I claim:

1. A fold able draft-beam for sectional harrows, comprising ahinge-jointed bar, a slidable sleeve on said bar to slide over andinclose said hinge-joint to lock. the bar straight and rigid, and theharrow (l1&it(l

position only while draft is applied.

2. A foldable dr it-beam for sectional harrows, comprising barshinge-jointed together endwise, a slidable sleeve on said bars, a stopto limit the slide of the sleeve to inclose and lock said hinge-joint,and a draft-chain connected to retain the sleeve against said stop.

3. A foldable draft-beam for sectional harrows, comprising a hingejointed bar, slidable sleeve mounted on the bar to inclose and lock saidhinge-joint, and a ring mounted loosely around said sleeve and adaptedto be In testimony whereof I al'lh; my signature in presence of twowitnesses.

EDGAR C. CLAUSEN. Vi itnesses S. WV. CHAMBERS, GEO. B. BIKER.

